i just started playing final fantasy x and most of the time it works fine with 60 fps but after about a minute or so it slows down and becomes glitchy and the returns to normal. It happens at random and not at certain areas of the game.
im playing on a laptop and it has a 2.2 ghz intel dual core processor
3gb ram
geforce 9400m g video card

that helped a bit
and it works full speed for about ten minutes
and after that it slows down to like 10 fps for a few seconds then back to normal.
if i suspend it and resume it it works for a bit longer
any suggestions would be appreciated.
thanks